Materials Data on Co2Ge by Materials Project

Abstract

Co2Ge crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. there are two inequivalent Co sites. In the first Co site, Co is bonded to six equivalent Co and five equivalent Ge atoms to form a mixture of distorted face and corner-sharing CoCo6Ge5 trigonal bipyramids. All Co–Co bond lengths are 2.63 Å. There are three shorter (2.31 Å) and two longer (2.51 Å) Co–Ge bond lengths. In the second Co site, Co is bonded in a 8-coordinate geometry to eight Co and six equivalent Ge atoms. Both Co–Co bond lengths are 2.51 Å. All Co–Ge bond lengths are 2.63 Å. Ge is bonded in a 11-coordinate geometry to eleven Co atoms.